服务器是ubuntu server 14.04，内核：3.13.0-32-generic , 硬件是dell R520
一、安装
方法一：
通过系统自带包安装
Ubuntu 14.04 版本系统中已经自带了 Docker 包，可以直接安装。
$ sudo apt-get update
$ sudo apt-get install -y docker.io
$ sudo ln -sf /usr/bin/docker.io /usr/local/bin/docker
$ sudo sed -i '$acomplete -F _docker docker' /etc/bash_completion.d/docker.io
方法二：
通过Docker源安装最新版本
要想安装最新版本的Docker需要使用Docker源来安装
# apt-get -y install apt-transport-https
# apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 36A1D7869245C8950F966E92D8576A8BA88D21E9
# bash -c "echo deb https://get.docker.io/ubuntu docker main > /etc/apt/sources.list.d/docker.list"
# apt-get update
# apt-get -y install lxc-docker
# docker -v //查看docker版本
# ps -ef | grep docker
root 17311 1 0 Feb13 ? 00:00:43 /usr/bin/docker -d
2、下载tar包并加入镜像里
一般下载镜像的时候，都是先docker search p_w_picpath_name，然后docker pull p_w_picpath_name
但由于最近GFW屏蔽了网络，在现在的时候会出现以下错误，根本pull不了镜像。
Pull ingrepository centos2014/05/19 13:35:11 Gethttps://cdn-registry-1.docker.io/v1/repositories/library/centos/tags: read tcp162.159.253.251:443: connection timed out
所以为了解决此问题，我就从别的地方下载了打包好的tar（后边会解释然后自己打包的），然后使用docker load导入先下载（有centos与ubuntu）
wget http://docker.widuu.com/ubuntu.tar
wget http://docker.widuu.com/centos.tar
加入到镜像里
#docker load -i centos.tar#docker load -i ubuntu.tar查看镜像列表
#docker p_w_picpaths
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE<none> <none> 607347d2a946 3 months ago 300.2 MBubuntu/widuu latest 963b9d0e10ba 3 monthsago 155 MB给centos的改个名
#docker tag 607 centos:latest
#docker p_w_picpathsREPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZEcentos latest 607347d2a946 3 months ago 300.2 MBubuntu/widuu latest 963b9d0e10ba 3 monthsago 155 MB测试镜像是否可用
#docker run centos /bin/echo "hello,i'm centos system"
hello,i'mcentos system#docker run ubuntu/widuu /bin/echo "hello,i'm ubuntu system"hello,i'mubuntu system使用交换模式
#docker run -i -t centos /bin/bash
bash-4.1#ifconfigeth0 Link encap:Ethernet HWaddr BA:08:86:7F:F8:48 inet addr:172.17.0.4 Bcast:0.0.0.0 Mask:255.255.0.0 inet6 addr: fe80::b808:86ff:fe7f:f848/64Scope:Link UP BROADCAST RUNNING MTU:1500 Metric:1 RX packets:6 errors:0 dropped:2overruns:0 frame:0 TX packets:2 errors:0 dropped:0overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:488 (488.0 b) TX bytes:168 (168.0 b) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0overruns:0 frame:0 TX packets:0 errors:0 dropped:0overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) bash-4.1# exit退出有2种方式，一种是完全退出，使用exit；另外一中是不完全退出，使用ctrl-p与ctrl-q
这样你不是完全退出了，但容器状态还是存在。
可用使用docker attach CONTAINER ID来重新进入。
如果你是完全退出了，docker容器状态显示Exited，需要重新启动docker容器，在使用attach进入.
docker start CONTAINER ID
docker attach CONTAINER ID
在宿主机ubuntu上面测试使用ssh进行连接docker容器
# docker run -i -t centos /bin/bash
bash-4.1#ifconfigeth0 Link encap:Ethernet HWaddr BA:08:86:7F:F8:48 inet addr:172.17.0.4 Bcast:0.0.0.0 Mask:255.255.0.0 inet6 addr: fe80::b808:86ff:fe7f:f848/64Scope:Link UP BROADCAST RUNNING MTU:1500 Metric:1 RX packets:6 errors:0 dropped:2overruns:0 frame:0 TX packets:2 errors:0 dropped:0overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:488 (488.0 b) TX bytes:168 (168.0 b)为docker容器里面root修改密码
bash-4.1# passwd root
New password:
/usr/share/cracklib/pw_dict.pwd: No such file or directory
PWOpen: No such file or directory
解决方法：
bash-4.1bash-4.1
bash-4.1
bash-4.1# passwd root
bash-4.1# service sshd start
Starting sshd: [ OK ]bash-4.1# netstat -ntl
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 0 :::22 :::* LISTEN
在docker容器上面上面进行ssh连接报下面错误
# ssh -l root 172.17.0.4
The authenticity of host '172.17.0.4 (172.17.0.4)' can't be established.
RSA key fingerprint is 9f:10:e8:9e:7c:a3:45:4e:ef:d0:19:f0:11:46:43:4e.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '172.17.0.4' (RSA) to the list of known hosts.
Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
解决方法：
bash-4.1# vim /etc/ssh/sshd_config
将PermitRootLogin no 改成 PermitRootLogin yes
RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile .ssh/authorized_keys
bash-4.1#service sshd restart
bash-4.1#setenforce 0
bash-4.1# ssh -l root 172.17.0.4
Last login: Fri Jun 26 07:09:47 2015 from 172.17.0.4
[root@504d16302ad4 ~]#
发现登录成功。
二、私有库
由于GFW，所以玩docker没办法pull与push，并且为了安全考虑，为了解决就搭建了私有库。
Docker 官方提供了 docker registry 的构建方法:https://github.com/docker/docker-registry
方法一，快速构建
快速构建 docker registry 通过以下两步:
安装 docker
运行 registry:
docker run -p 5000:5000 registry
这种方法通过 Docker hub 使用官方镜像 https://registry.hub.docker.com/_/registry/
方法二，不使用容器构建registry
安装必要的软件
# apt-get install build-essential python-dev libevent-dev python-pip liblzma-dev gunicorn python-dev -y
配置 docker-registry
# pip install docker-registry
或者 使用 github clone 手动安装
$ git clone https://github.com/dotcloud/docker-registry.git $ cd docker-registry/ $ cp config/config_sample.yml config/config.yml $ mkdir /data/registry -p $ pip install .
运行
# gunicorn -k gevent --max-requests 100 --graceful-timeout 3600 -t 3600 -b localhost:5000 -w 8 -D --access-logfile /tmp/gunicorn.log docker_registry.wsgi:application
客户端推送镜像到私有库
1、 先注册账号
# docker login localhost:5000
2、给提交的镜像打标签
# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 504d16302ad4 jdeathe/centos-ssh "/bin/bash" About an hour ago Up 42 minutes 22/tcp serene_bardeen # docker commit 504d16302ad4 centos:v1 b47276971c2db84bd76659da86a4ea5bda227f008c5004152232183066f20533 # docker p_w_picpaths REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE centos v1 b47276971c2d 7 seconds ago 376.8 MB jdeathe/centos-ssh latest b071db8f6e23 4 weeks ago 238 MB
3、推送到私有库
# docker push localhost:5000/centos
The pushrefers to a repository [localhost:5000/centos] (len: 1)Sendingp_w_picpath listPushingrepository localhost:5000/centos (1 tags)Image384630bcda7c already pushed, skippingImage607347d2a946 already pushed, skipping5abf7cce3767:Image successfully pushedPushingtag for rev [5abf7cce3767] on{http://localhost:5000/v1/repositories/centos/tags/latest}# docker p_w_picpaths
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
centos v1 b47276971c2d About an hour ago 376.8 MB
localhost:5000/centos latest b47276971c2d About an hour ago 376.8 MB
jdeathe/centos-ssh latest b071db8f6e23 4 weeks ago 238 MB